A certain ideal gas has a temperature 300 K and a pressure 5.0 × 104 Pa. The molecules have a mean free path of 4.0 × 10?7 m. If the temperature is raised to 350 K and the pressure is reduced to 1.0 × 104 Pa the mean free path is then:
A. 6.9 × 10?8 m
B. 9.3 × 10?8 m
C. 3.3 × 10?7 m
D. 1.7 × 10?6 m
E. 2.3 × 10?6 m
Answer: E. 2.3 × 10?6 m
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